Problem with Keystore Service

Hi,

i want to do the Tutorial: Using the Keystore Service for Client Side HTTPS Connections. (https://help.hana.ondemand.com/help/frameset.htm?38144cd12fcc44249e7b2c4584f46045.html).

After step 2 e eclipse shows up 13 errors. I've attached a screenshot with the errors.

It's not possible to import javax.servlet or com.sap.cloud.crypto.

I don't know how to solve it.

Thanks in advance,

Simon